311230153123 has 4 divisors (see below), whose sum is σ = 314979914088. Its totient is φ = 307480392160.

The previous prime is 311230153111. The next prime is 311230153141. The reversal of 311230153123 is 321351032113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311230153123 - 2³⁷ = 173791199651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311230153103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1874880358 + ... + 1874880523.

It is an arithmetic number, because the mean of its divisors is an integer number (78744978522).

Almost surely, 2^311230153123 is an apocalyptic number.

311230153123 is a deficient number, since it is larger than the sum of its proper divisors (3749760965).

311230153123 is an equidigital number, since it uses as much as digits as its factorization.

311230153123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749760964.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 311230153123 its reverse (321351032113), we get a palindrome (632581185236).

The spelling of 311230153123 in words is "three hundred eleven billion, two hundred thirty million, one hundred fifty-three thousand, one hundred twenty-three".